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Subtask 75-21-10-010-058
R F. Open the right thrust reverser door: (Ref. TASK 78-36-00-010-040) FOR 1000EM1 452AR FOR 1000EM2 462AR
4. Procedure
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(Ref. Fig. 401/TASK 75-21-10-991-301)
Subtask 75-21-10-020-052
A. Disconnect the electrical connectors from the HPTACC as follows:
(1) Disconnect the Channel A (260) and Channel B (250) electrical connector, from the High Pressure Turbine Active Clearance Control (HPTACC) valve (10). Use soft-jawed pliers if necessary.
(2) Install blanking caps on the electrical connectors of the leads for Channel A (260) and Channel B (250).
Subtask 75-21-10-020-051
B. Removal of the HPTACC Valve:
(1) Remove the fuel manifold from the HPTACC as follows:
(a) Put a container 1 L (0.25 USgal) under the area of the fuel manifold (290) of the HPTACC valve (10).
(b) Remove the bolts (300) from the bracket and fuel manifold (290).
(c) Remove the bolts (310) from the fuel manifold (290).
(d) Remove and inspect the gasket (280) from between the fuel manifold (290) and the HPTACC valve (10).
(e) Install blanking covers on the fuel inlet of the HPTACC valve
(10) and the outlet of the fuel manifold (290). R (2) Remove the 9th stage air inlet tube from the HPTACC as follows:
(a) Remove the bolts (80) from the inlet side of the 9th-stage air tube (70) and the HPTACC valve (10).
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HPTACC Valve Location
Figure 401/TASK 75-21-10-991-301- 14 (SHEET 1)
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HPTACC Valve Location
Figure 401/TASK 75-21-10-991-301- 24 (SHEET 2)
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HPTACC Valve Location
Figure 401/TASK 75-21-10-991-301- 34 (SHEET 3)
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HPTACC Valve Location
Figure 401/TASK 75-21-10-991-301- 44 (SHEET 4)
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(b) Remove and discard the gasket (90).
(c) Remove the bolts (160) and the nut (130) from the outlet side of the 9th-stage air tube elbow (120).
(d) Remove and discard the gasket (150) and (155).
(e) Install blanking covers on the inlet port (70) and the outlet port (140) of the 9th stage air tubes.
R (3) Remove the 4th stage air outlet tube from the HPTACC as follows:
(a) Remove lockwire an loosen the nut (180) of the V-band clamp (190) at the 4th stage air outlet port (140) of the HPTACC Valve (10).
(b) Remove the V-band clamp (190) from the HPTACC Valve (10).
(c) If necessary, for ease of removal, loosen the bolts (210) of the retaining strap (200) that secures the 4th and 9th stage air tube (140).
(d) Remove the discard the metal seal ring (170). R (4) Remove the 4th stage air outlet tube from the HPTACC as follows.
(a) Remove the bolts (40) from the 4th stage air inlet port of the HPTACC Valve (10) and the combustion case boss (20).
(b) Remove and discard the gasket (30).
(c) Install a blanking covers on the outlet port (140) of the 4th stage air tube.
(5) Remove the HPTACC from the combustion case as follows:
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